Monster Power increase could increase more than it does at the moment. Ideas along this line of thinking:
Add affixes to non-elite monsters at higher MP lvls.
Add unique abilities to bosses and mini bosses at higher MP lvls.
The idea here being that increased health and dmg doesn't need to be the only added challenge of increasing monster power. Not all players welcome change but further levels of diversity are good for the replay value of the game. The proposed changes in 1.07 will send many players after bosses they haven't felt a need to kill in many months and it might be refreshing to see those bosses gain some extra teeth with which to eat us with.
More gated content. I feel certain the devs may already be working on Uber versions of the bosses we have yet to see in said instances. Just want to say, i like it and eagerly await more of it.
I'd go so far as to say Uber versions of the mini-bosses could be good. Beef them up with a few mechanics and b/c they are "mini-bosses" and Uber they could have "random" affixes gump-style (you never know what ur gonna get). Saying That "i'd like to see uber versions of lesser minions" doesn't mean I would rather see them than major bosses like Diablo himself just that I like the gameplay option enough to apply it elsewhere in easier to obtain doses as well as harder to obtain doses.
Suggestion for the new item patterns in 1.07:
Instead of just selecting Int, Str, Dex as a main stat allow us to select class at the same time and have a chance for skill increase similar to what some items have already. If those affixes are just randomly added to an item we stand a good chance of getting bad item combos like strength wizard skill or int barb skill and it takes away from the chance for the items to be useful but adding it as a selection option does nothing but increase the usefulness of the items even if the other rolls aren't outstanding.
Because of this bosses placement in act4 being so close to the beginning of the act, it may be necessary to increase the density of elite minions to allow for players to gain NV-5 stacks. Admittedly, it's been a while since I felt a need to kill him at all. It may be easier to get a 5 stack than I'm thinking it will be but it's the 1st thing I thought when i saw his name. PTR will show if it's true or not I suppose.
Just a few thoughts rattling around in my skull. Maybe a CM will see them, maybe not. In case you do, thanks for the hard work and don't let the nay-sayers get you down.